Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bb842745653f20890dc2b2084dad842226431421f74fbf41f02dda99fe6f30e' 
  AND token = 'eKF5/c/skmZOJwfogJAZFIYiQ4OyS8Spu30FFJ7MVdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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