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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aae1d3de568de0414ebf6b9d80ddaa54cfc3b32ff9b0b9049f06a9c2620888cb' 
  AND token = 'Jj5UntXeP3ba+c1vBjZSR6waOIVeEIRf+6Tjl9IKyeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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