Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67a9acd627962e2863e60da420901bcd6a523e577f31ce02e3a28ec9d8273e05' 
  AND token = 'O+qEqS9XiGKYkibAV4dFOdiJg27NIG0J4NrV0WimVtk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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