SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '614e95381b0652481ed9caac45f33cfe285148563ca9b8da2cf3a2a3d762d165' 
  AND token = 'uzILPP5QinC5/sV07V0nV/tOdj/l0n+KS2b8agArJZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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