Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fa726a1ebc6017849ac084ecee083776fc6de8cf043c1f27b406522a2f163e7' 
  AND token = 'oFYqHwQehMU8mgWhLTofn1yNYorh7aHFQK0tVHrdbZ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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