Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ad60dbf1eaba92fc9044afa07dcc339596963223e278abe42f3e9e644df82c6' 
  AND token = 'Ge3dcJkANfE361jn7cofTjLffpiE0m8zVBj4c2biZfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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