Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1a7f62deefdcf5e624b255430392ec2702f228948a4c8c795c91e609c8584d1' 
  AND token = 'IHvknh7OMJohWNrmu0E9mE75kQqbzcvY2ci21lY2G3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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