Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c0bb1be9efc9d6e15b5c0a7b524cfda75082a015dba1156ec4b228bae3c867b8' 
  AND token = 'ymRJXxtuc9MwnsuViNp34uPd5KsZyPy4eKm10J5mqFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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