Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60362c219075c007afe6258a282d8da9bd2c186a680e920e3402b12c26eb3129' 
  AND token = 'iijCVCgDu4nHsePZI4dpUTGxLSuh/RNfi95t/KVdUJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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