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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32113ab7de0613d4131a0678d52ed8828b312b122edf386315d3e2eba0640530' 
  AND token = '040ETdm7qYr5JLKQlAuy9rQ1YEouJyC8bmGiWwT+0WU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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