Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26e7208138077f69b440b16b942dfcd24001e59bd455973ba37233cd2ebb6a22' 
  AND token = 'N73R5QY6Vl14GZFJttnOSIoYGP/KiLHWFsUveorPCk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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