Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97cf988a596bf99b8f2be900c95a7848cf4100128b6e11f2ab168e582048c901' 
  AND token = 'PJPBy63c1uDF8U1V1wPLxaqDXXg9GHlOx20yG6RBgA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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