Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc10def73879ee56cd29779050c2f4d779526806c998dcbd4e62facdb79d9edb' 
  AND token = 'IxhlR/C3wa0PR+2BAzFxTnrWLJ/fE6Q3e7W2VV1HufQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}