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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bccdb6296a003fed8fbf9455a2e3b9166e96d9f4cc54ed8dfe538f3a8aa53b7' 
  AND token = 'LdAUajXc1qXPeUWxKsoNcsPq8lzJhuxqgQ6yTwDpKhQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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