Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '59d53f39de85a3d1c9093e3d7d377b8d072b4c1e43fd0be6e34829dda4cc9aac' 
  AND token = 'FR4eKQErA416R9axAUzmHnjjNf3aYw7coC0sfBehwXE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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