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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e533526d0e503ed6c826ab7ceac85eef57605b8446c951c40ac55936337fea6b' 
  AND token = '9Qsbk3RG+YyRPaxiR40Vr6Cjt7K6+GZZzI+2B8KOKsA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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