Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e08deed37087db28941766602559469e7867ca9a41b705001fa7587e07799571' 
  AND token = 'PQujMUNkHg+Fw+uwP/4erTt+rtYxu4NTU3F7E19CivQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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