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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '65344fad518ec4e49adfbffd55fc7cc588da882bbc9744ec4caa39db27ee8e14' 
  AND token = 'gAJwhiNPrQUL+t/o2I99v+5cpTcrp1/IVvfji1/ylmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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