Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '088cd50ed174cf92b6d83b925c33d408fef170fb4d87b5a78b09ecaedd66c0cd' 
  AND token = 'FFzEmZ47BAxf12/mURkZHkfPqxAGyii4QXBC7z4LHeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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