Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd906471a0d412c2ea0c3cd9078eaad6738319a30f6cc584253d6ad48011e6c5' 
  AND token = 'bvJTqH2RAYyAS2LJcqcErf62o5Ddp+alUVA4WEtZWo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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