Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0654431bae4dc5638c3fb13c22ce037c9e19621c65f459538eba8c693fb4f16f' 
  AND token = '00nfyS9YH8PLT3huGxQDrg3/7XMuOIDI8vluflghCbY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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