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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bb77be130ef10e60ab71ab214370be75c37f95d6de8f2b564ea20a3e28d06047' 
  AND token = 'MzAOfB+bjEfG/r71KWUGXKoCz5mmN0LMwT+a2QBUW64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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