Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e1061d2ba74dbbce2da19177b7b02a4b11950da00504df75081801883b3c25b' 
  AND token = 'bGf0zZqqFyrBzM78S2f+3Hvw4RV2HnWAduYnryPRtuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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