Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c4e582c873b6623c8aa55edd738dc04c3098f5edeaa3f3191505a20dbb4b490' 
  AND token = 'hYBN2RnLJZPw9InFdFuShuan4hdUXzu9g8A7wqUfmkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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