Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d52a4d1bd6a8cccdf906e093823626e1f63afb35758ace370ec00bfe62e2698' 
  AND token = 'YyRNcy775sqF2AXknFcnS7ERG0ug+Uiw1TV4xKFH/Do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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