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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2195e3bba5888a08ac963dfda6aa7bc5df5dd3b04a9623b570f62376a5ea72bc' 
  AND token = 'Xa4eE/Xwh0E70ejEur1cwdVJpDYxP2/CmV+vn81Mi7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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