SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195b960ba9292814257e7774116d2eb33732c30a8fe212416cc812f32f0f7d78' 
  AND token = 'NalVnPOCy/LhJQYQGlgWEaRJLiDhBL6VFJZl9Fx7PF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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