Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcd0e4919a48900cf29b4266e8678eeecc00ee6e57adc246624a7f11ac4cdd95' 
  AND token = 'Jd58zKAbC1d/kANZozkmCU1khcoq6OU+q5EG7eQ4O6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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