Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1931bef7f3533f2d52752f30cc11ac5106a5349d4f26869975cd3177b055e48a' 
  AND token = 'hL5ulRr5rOal5nt+V6P1PMcXyfK4d5bVCLR4EHsqQmY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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