Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2fdae1f392649de2a3928499fabcc2aacd1ab4bb75fac72a8f18a28f67a82828' 
  AND token = '13dBlVAMSLTKMcXkLjSOPGgLrBKFGka1uNuBKRDGOPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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