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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c35146c06b519f19510df5d8403276b095f4b3a5cc06865ce72d2f200aa9a8ea' 
  AND token = 'yPCq90j6a2MXcyTKhVSgDS9aCLTYFe05zWSHb2NAZ/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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