Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b30dd4d73e1393e2340b0b0a8836d1228d24ac042d40825873b30f2e2d353bd' 
  AND token = 'ihdRS6iacw0oyQxwwNulkhw+JUDaqbU7dCNxqSK71Lw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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