Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ec07c20bf377aa2a0c4b32d7aedc973f7d9f0bb3008ac7183c3353609d5d7c8' 
  AND token = '3oIqyFs6pNM0jlm8+oRBMANLLyDKdwI6EXXAv4TtCVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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