Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fc1a0c3779d44071fa3fbcaa191e800ba9a70c4d72ddf0ef4da479439d35fe0' 
  AND token = 'KvuRhmUlRAnjowZWhepyDtiiGYZvh1CmME8UaSDqZZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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