Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd29e60bd7d09cf70588b5f19e637b0308440bdda9eaf2af598826cb0b0896279' 
  AND token = 'vEBuvMphRLk/K1kPMdlCqrzmrfsWhso2ODJapAkAG7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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