Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65c7934dbd563bf9eb3ba152267211b0971218e02fe77f3e0776eb32fb2f8eb5' 
  AND token = 'oFq1h+aYX0SMIzTKkjwsMlMtYGhpAf8pNAHplPRHcRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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