Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39dfe2c867d267a9a3163d0921c682f075ac006891884c4cacce3f982fb5ae33' 
  AND token = '2AYL0ESjIfzIRZnL5QlO8ti91RcLlXr8CkQpVSUUN1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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