Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1408f212fdfdcf20adaa190437adf60f4aba551cb922472a8380f797dbd306dc' 
  AND token = 'dMXA7bT/2++ytQUwdm0qu84HpYkgqGCnaSrlfsIZP70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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