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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bcd95a72dd85c1ac5dad68c4d31691718181218d4928637af0aab2c59ded151' 
  AND token = 'wWn6BVLkupqH4OayKDTJinEWKGj+EXLA0a8um7begk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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