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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '171f01cdbdf4b03bfe96f7e906e8dbfdbbcc814329f4b05b37b490e6f7c52012' 
  AND token = 'iO9XNaCsw3nCP6Rx+zZCceQfICQbJYNn7P2wS9ANj/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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