Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6be1c5c37277800674e3c1a05a86b5036dd0b8297d61b471d17f716ab1a5f66' 
  AND token = 'jx09SU3xVAFmI/OQJVfGIBpIsyvhmNCOULzdQexEM7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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