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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02f024f71002922989aa2340395fc8fb77389faebc283380bbc4ba4b212b9802' 
  AND token = 'TWK3J2VQC9joDe4xYoqwwnukghS9Y7+gXJGAHoof56M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}