Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96c2593b5470982ad4399937c8dd4030f737d3470f639e966b48835d9468a2c8' 
  AND token = 'x3R4HyC7D1BVphgPX0Tuu4pMzFsOaODiEVdP408OppU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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