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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96cd2fdd468f84c970fcd3dc7b9e67ac7caa100d90f0527f19ec11d59225e0ca' 
  AND token = 'yFa6WaX4CJFt2I/kgrWuydE8lS3OYCUQ675aXcwEJK4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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