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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e27c7b22c0d32e49f020497c70850713a30961f2d74666fe9759bf0133737e2' 
  AND token = 'lyeiREWSWn4AiNHoJ2rzQd7X/v3Zb0PyZuct5jxiAKI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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