Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d43ca91cab3628c10d0a1d897c8f87217c1fcdb4ef8103416f99e0242f266fe' 
  AND token = 'lQuy22PDwGcUIhLvNUsBvrcaxUvqAz7S1jqnGuuUrjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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