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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09affa98eedff8f26e761d8b1c5bea225cbd285d669b35fe8d9730fcc0956402' 
  AND token = 'KyKqpWQqyTBiaDEJylM6C5/d1b0Iwl/riNXpIDtzbq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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