Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65eaf1cb0512f485f593756121db9789698901838044a2a2ff4f892f8fb22570' 
  AND token = 'dPChKoUuhQmJ2dZindrseAFWi3irBJ2hteqxOr0uI/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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