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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd69f048c31c3f84d2ec62efc41e1402dfb4aa545dbe50f35abd79e9e9f5b19f5' 
  AND token = 'Abfas69tgGYH9CE8xEyoG7yclqZPV+NrRs8Gjf7Qmv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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