Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1b636c2aa6d15daa655747cc3580cacaad350e69e3fa00f733907bee4022107' 
  AND token = 'XfqMun2ojYfAmwbt83GS+9eijLaTeLYRM6UR7PNTOZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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