Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1c4a96f3f3c6511eac300150f1ccd6a625d6a5922c1db067d209904aa4c37b4' 
  AND token = 'EX874hg6XqW2BLMtDq3HjP6rE2nC2y777S7cVZF3zQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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