Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60e89720744c78690f085ed4695e90add7a47451849e833bd8f02c2476fbb1a1' 
  AND token = 'QCz6lYImBYBcrt2RgAERV/bxcn5ertGT0ssX0kRa0iQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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