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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '24ea19b7b23b039956f3c79416b45ad09813fffaadfee0421f0acf727ce236e3' 
  AND token = 'fdqvLQ31biQrwO5oXcKUdgvh0v66uaTjDtUPEnGJM44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}