SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0bdaecd174ef57b5d7ff4462d819933084aae2472195481d03f1c15924fbf31' 
  AND token = '1wi0g6OwCZXZ/cszlTeahnMntHtBsLYBp2oKg4qiGQQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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