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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c9320efcf262b6b0b55a912b5d6bebe809014ff69a5a55bdf4a924145f943550' 
  AND token = 'yzXooUIlqJ8aPVD1a8XRTjrAK41l6JBCehoQesVpbHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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